<template>
  <view class="cart-container" v-if="cart.length !== 0">
    <!-- 收货地址 -->
    <my-address></my-address>
    
    <!-- 商品列表的标题区域 -->
    <view class="cart-title">
      <!-- 左侧的图标 -->
      <uni-icons type="shop" size="18"></uni-icons>
      <!-- 右侧的文本 -->
      <text class="cart-title-text">购物车</text>
    </view>
    
    <!-- 循环渲染购物车中商品信息 -->
    <uni-swipe-action>
      <block v-for="(goods, i) in cart" :key="i">
      <uni-swipe-action-item>
        <!-- 这里渲染可以直接调用之前的my-goods组件 -->
        <my-goods :goods="goods" :showRodio="true" :showNum="true" @radio-change="radioChangeHandler" @Num-change="numberChangeHandler"></my-goods>
        <template v-slot:right>
        <view class="slot-button" @click="swipeActionClickHandler(goods)">
          <text class="slot-button-text">删除</text>
        </view>
      </template>
      </uni-swipe-action-item>
      </block>
    </uni-swipe-action>
    
    <!-- 结算 -->
    <my-settle></my-settle>
    
  </view>
  <!-- 空白购物车区域 -->
   <view class="empty-cart" v-else>
     <image src="@/static/cart_empty@2x.png" class="empty-img"></image>
     <text class="tip-text">空空如也~</text>
   </view>
</template>

<script>
  import badgeMix from '@/mixins/tabbar-badge.js'
  import {mapState,mapMutations} from 'vuex'
  export default {
    mixins: [badgeMix],
    computed: {
      ...mapState('m_cart',['cart'])
    },
    data() {
      return {
        options:[{
          text: '删除',
          style: {
            backgroundColor: '#C00000'
          }
        }]
      };
    },
    methods:{
      ...mapMutations('m_cart',['updateGoodsState','updateGoodsCount', 'removeGoodsById']),
      radioChangeHandler(e){
        this.updateGoodsState(e)
        // console.log(e)
      },
      numberChangeHandler(e){
        this.updateGoodsCount(e)
        // console.log(e)
      },
      swipeActionClickHandler(goods) {
         this.removeGoodsById(goods.goods_id)
      }
    }
  }
</script>

<style lang="scss">
  .cart-container{
    padding-bottom: 50px;
  }
  .cart-title{
    height: 40px;
    display: flex;
    align-items: center;
    padding-left: 5px; 
    font-size: 14px;
    border-bottom: 1px solid #efefef;
    .cart-title-text{
      margin-left: 10px;
    }
  }
  .slot-button {
  background-color: #C00000;
  display: flex;
  width: 150rpx;
  justify-content: center;
  align-items: center;
    .slot-button-text {  
      color: #f0f0f0;  
      font-size: 14px;  
    }
  }
  .empty-cart {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 150px;
  
    .empty-img {
      width: 90px;
      height: 90px;
    }
  
    .tip-text {
      font-size: 12px;
      color: gray;
      margin-top: 15px;
    }
  }
</style>
